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High-power, single-frequency, continuous-wave optical parametric oscillator employing a variable reflectivity volume
Optics Express
|January 22, 2015
Summary
This study demonstrates a continuous-wave singly-resonant optical parametric oscillator (SRO) achieving 75% efficiency. The novel design uses a variable-reflectivity volume Bragg grating (VBG) for optimal output coupling.
Area of Science:
- Optics and Photonics
- Laser Physics
- Nonlinear Optics
Background:
- Continuous-wave singly-resonant optical parametric oscillators (SROs) are crucial for generating tunable laser light.
- Achieving high extraction efficiency in SROs often requires complex cavity designs and precise control of pump power.
Purpose of the Study:
- To demonstrate a continuous-wave SRO with independently adjustable extraction efficiency.
- To achieve high output power and efficiency using a simplified cavity design.
Main Methods:
- Implementation of a ring cavity SRO utilizing a variable-reflectivity volume Bragg grating (VBG) as the output coupler.
- Elimination of additional intra-cavity optical elements to simplify the system.
Main Results:
- A 75% extraction efficiency was achieved for the SRO.
- A combined signal and idler output power of 30 W was obtained (19 W at 1.55 µm and 11 W at 3.4 µm).
- The extraction efficiency was successfully adjusted independently of the pump power.
Conclusions:
- The demonstrated VBG-based SRO offers a simplified and highly efficient method for generating tunable laser output.
- This approach provides independent control over extraction efficiency, enhancing its versatility for various applications.
